Hello.

Can anybody please direct me / give me a link to, e.g. a tutorial, where I can learn how to debug the Linux Kernel from?

I want to set breakpoints, step over, step in, etc., into code of the linux kernel, not into a loadable module. The linux os target will be a VM, so the channel will need to be serial port / named pipe.

Additional questions I have:
1. Can gdb be used to debug the kernel as well? Or kdb is used only?
2. Can I drive the debugging from within some IDE? Or the debugger commands require that I stick to the terminal?
3. Does the debugger need debugging symbols in order to be able to interpret the binary? If yes, how do I do use them?

Thanks!

Best place to start is the hacking guide in the kernel source in Documentation/DocBook/kernel-hacking.tmpl

Uhm, what should I use to read the *.tmpl files properly? (I see it's an xml format)

Is there such a tool on Windows as well? (I'm usually using Windows)

Edit: I see you can call "make pdfdocs"

Better reference link about kernel documentation.

Thanks for the link,

Apparently, the "kgdb" help item is of more use.

However...
What is and where do I find CONFIG_KGDB?
What / where is the item "Kernel debugging"? (folder help file, or what's supposed to be?)
Where do I set "KDGDB: kernel debugger"? in a config command? or?

Also, I see that in order to be able to connect with kgdb, the kernel must have been built specifically so as to allow debugging (and / or build with symbols). So, for my particular case, where my target (linux) OS is in a VM, I should build the linux kernel on the target with this specific config ("./Kconfig CONFIG_DEBUG_INFO=y"?), and then make install, then reboot - right?

Edit: I've found it, it's /boot/config-3.19.0-031900-generic
Edit: I've found this - http://www.linux.org/attachments/lin...ries-pdf.1982/ - talks about configuring the kernel. I think I should study this first.

Yes. You have a build the linux kernel for enabling debugging options. Read Kernel-Howto from LDP. It may be of some help.